Removal of multiple pesticide residues from water by low-pressure thin-film composite membrane

• DOI: 10.1007/s13201-020-01315-y
• Publication Date: 2020-11-23T17:14:43Z
• Authors: Ayan Mukherjee; Romil Mehta; Soumen Saha; A. Bhattacharya; Pabitra Kumar Biswas; Ramen Kumar Kole
• Keywords: Thin-film composite membrane; Interfacial polymerization; Endosulfan

Abstract The study evaluated removal efficiency of 43 pesticides from water by thin-film composite polyamide membrane indigenously prepared interfacial polymerization 1,3-phenylenediamine and 1,3,5 trimesoyl chloride coated on asymmetric polysulfone support. Membrane performance was gas liquid chromatography mass spectroscopy determination multiple remaining in feed permeated following the application each @ 0.02, 0.05, 0.10 mg/L de-ionized water. most efficient rejection persistent organochlorine insecticides, viz. endosulfans (100%), dichlorodiphenyltrichloroethane (95%), hexachlorocyclohexane (92%). Out selected pesticides, 33 were removed > 80%. Size exclusion transfer played a significant role for molecules to pass through as observed endosulfan isomers, sulphate, difenoconazole with molecular weight 400. Pesticide also related hydrophobicity (Log P) . Hydrophobic log P 4.5 rejected 80%, while monocrotophos less (log = − 0.22) exhibited poor (38%). Water flux decreased an increase pesticide concentration. process filtration optimized at 200 psi. results indicated potential remove